Nut-machine



UNITED srarns ar ornicn.

ROBERT BRAY'ION, OF BUFFALO, NEV YORK.

NUT-MACHINE.

Specification of Letters Patent No. 17,914, dated August 4, 1857.

To all 'whom t may concern:

Be it known that I, ROBERT BRAYTON, of Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Machines for Making Nuts and Washers, being an improvement on a machine for which Letters Patent were granted to me January 9, 1855, of which improvement I do hereby declare the following to be a full and exact description, reference being had to the accompanying drawings and to the letters of reference marked thereon.

Figure 1, in the drawings, is a front elevation of my improved machine, and Fig. 2, a side elevation. The other views are of detached sections, which will be referred to in description.

Like letters represent llike parts in the different views.

My improvement relates to a lock or trip, consisting of a combination of devices, of which the action or movement of the dies are so controlled in the manufacture of nuts and washers that the workman can cause the dies to descend and operate at regular or irregular intervals, as the nature of the case may require.

This improvement insures more accuracy and certainty of action than can be obtained by the arrangement described in my patent of 1855, or by any other known arrange ment. It is also much less complicated than that described in the patent above referred to. It is found that the former arrangement, owing to its complexity, became de- `ranged by the great strain and pressure and thequick succession of strokes or blows required to make hot pressed nuts and washers.

The dies A, A', Fig. 1, of this machine, are substantially the same, in the principle of their construction and operat-ion as those described in my patents of Jan. 1855 and Jan. 1857, which is also the case with the hammer or headblock B, piston C, steam cylinder D, steam chest E, with its. receiving and exhaust openings, the springs F, and other working parts of the machine, excepting the devices comprising the lock or trip, hereinafter described.

The frame G, may be of any convenient form, and of a proportion, like other parts of the machine, in accordance wit-h the size of the nuts or other articles to be made.

In front of the machine is bolted the brace H, and directly in line with it there is one bolted to the back of the machine. The front brace has in addition, two boxes, corresponding to I, Figs. 1 and 2, one on each side of the eccentric J, Fig. 3.

The shaft K, works in these boxes. On the inside end of the shaft, is keyed the arm L, Figs. 1, 3, and 4, and the eccentric J, is connected to the valve rod M by a strap and joint as seen at N, Figs. 1 and Q. This valve rod passes through the guides O, and extends into the steam chest E, where it is connected to the slide valve; in the guide O, is a chamber which receives the spiral spring P. This spiral spring surrounds that portion of the valve rod that is in the chamber; the lower end of the spring rests upon the shoulder M, of the rod and the upper end of the spring presses against the top of the chamber as indicated in Fig. 1; by the action of this spring I), in combination with the eccentric J, Fig. 4, the arm L, is moved from L to L, and also reverses the valve, as soon as it is released from the spring catch Q; thereby steam is admitted to the upper end of the cylinder, causing the headblock B, and the dies, to descend from A to A, and back to A, thereby makinga double stroke. At the same time, the wrist It, which is secured to the headblock, as it descends, turns the arm L, down to L, when it is caught by the spring catch Q, as seen in Fig. 4. Thus, as soon as the arm L, is released from the catch, it turns from L to L, which instantly causes the head block to descend, and the dies to punch and compress the nut into shape; the head block then returns to its former position, and the nut is discharged from t-he die box, in which it is formed. This operation is instantaneous, and continues until the nut is discharged from the box. IVhen the arm is at L, the position of the slide is reversed or changed so that steam is admitted to the lower end of the cylinder, causing the head block to rise to the position seen in Fig. 1, and is there held by the pressure of steam on the underside of the piston. until the arm is detached from the catch Q, when the headblock forms a double stroke, during which the nut or washer is formed and detached from the dies.

The devices employed to operate the catch Q, consist of the tumbler or trigger S, which works upon the wrist or pin T, Figs. 3 and 4, and by which it is attached to the arm U, the arm U being bolted or otherwise attached to the brace I-I.

The upper arm S of the trigger S eX- tends over the top of the spring catch Q, as seen in Fig. 3, and the toe Sl of the tumbler enters a corresponding notch or groove o, in the slide rod V; the lower end of this rod is connected by a joint to the foot lever a, which works upon a pin or joint at 7),' on the underside of the foot lever is secured the spring 0, indicated in Fig. 2. The action of this springis to raise the lever to a', when depressed to a by the lower end of the spring pressing on the brace d; t-he tendency is at all times to keep the lever at a. The brace Z is for the purpose of keeping the lever in place, and to prevent any lateral motion. On the underside of the upper end of the slide rod, is secured the spring c; the purpose of this spring is to so raise or force up the rod, that the toe will enter the notch or groove Z2, as seen at S, Fig. 3. This upper end of the rod slides in a guide formed in the brace U.

By depressing the toot lever to a, the slide rod V, is drawn down correspondingly, and as the rod is being dra-wn down the pin f causes the head of the rod to be depressed by the projection g, passing under the pin f; this depression of the head by the pin, allows the toe S to slip out of the notch o, and at the same time, the tumbler s, is so turned or moved, in the direction of the arrow, that the spring Q, under the arm S, is depressed, detaching the arm L from the spring. Then it is instantly turned up to the wrist R, by the spiral spring P. The heated bar being in place, the foot presses down the lever, a, which movement is transmitted to the tumbler s, and thereby detaching the arm L Jfrom the spring; as soon as the lever a is released from pressure, the spring 0 raises it to a and the slide rod V, moves correspondingly, and by means oi the curved form or inclined plane L, at the head of the rod, it slides under the toe, then the head of the rod is raised by the spring e, so that the toe passes into the notch, and is retained there by the springs until detached in the manner described.

The improvements herein set forth, are

applicable to other purposes where a corresponding action may be needed in the operation of machines for purposes analogous to that of the machine herein before described.

In the machine, for which a patent was granted to me in 1855, the apparatus for operating the machine pounded violently at each stroke of the headblock B, and the same diliiculty existed with the long rod that connects the toe S, to the locks, conse quently the machine by its quick and powerful motion became deranged in a short time. In the improvement herein described, all pounding is avoided; also, in the improved machine the locks are not so complicated, and their action is more direct and etlicient than in the former machine, or than in any other known.

By the operator placing his foo-t on the lever a, the machine may be operated at regular or irregular intervals, and by this means, the bar may be always adjusted to its proper position before the foot lever is depressed. In machines where the dies operate at regular intervals, the bar requires to be quickly and nicely adjusted and at regular intervals, or the nut is imperfectly formed, or, a. piece from the side or end of the bar may be cut ofi:l without orming a nut which is a waste of material and time, but in my improvement the dies and other parts of the machine are so controlled that these diiiiculties do Vnot occur.

Wvhat I claim as new and my improvement, and what I desire t-o secure by Letters Patent, is,

Theuse of the trigger S, spring catch Q,

arm L, pin f, slide rod V, provided with the spring e, notch o, projecting and inclined plane 72 substantially as herein described, and in relation to, and being operated by the foot lever a, and spring c, constructed and arranged in the manner, and for the purpose specified.

ROBERT BRAYTON. `Witnessesz S. D. VAN SG1-mick, J. R. JONES. 

